Rolling-mill.



F. C. BIGGERT, Jn.

ROLLING MILL.

APPLICATION FILED JUNE 4, 1910.

Patented Jan.3, 1911.

3 BHEET8-BHEET 1.

Mfm 1%.

F. c. BIGGERT, JR.

ROLLING MILL.

APPLICATION IILEDJUNE 4, 1910.

Patented Jan. 3, 1911.

3 BHBETS-SHEET 2.

INVENTOR 3 @wwullu F. O. BIGGERT, JR-

ROLLING MILL.

APPLIOATION FILED JUNE 4, 1910.

Patented Jan. 3, 1911.

3 SHEETS-SHEET 3.

R O T N E V N UNITED STATES PATENT OFFICE.

FLORENCE BIGGER'I, 'J'R., OF PITTSBIIQB G, PENNSYLVANIA, ASSIGNOR TO UNITED ENGINEERING & FOUNDRY COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPO- RATION OF PENNSYLVANIA.

ROLLING-MILL.

Patented Jan. 3, 1911.

Application filed June 4, 1910. Serial No. 565,086.

It all whom it may concern:

garatory to receiving another pass.

Be it known that I, FLORENCE C. BIGGERT, J r., resident of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Improvement in Rolling-Mills, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of the specification, in which Figure 1 is a longitudinal section of a portion of a two-high rolling mill having my invention applied thereto. Fig. 2 is-a plan view of the same and also showing the table actuating motor. Fig. 3 is a view similar to Fig. 1, but showing a modification.

In rolling slabs and the like in a two-high mill, the slabs are passed back over the top of the upper roll, where they are turned over by an attendant and are allowed to drop on to the roll table in front of the rolls Tpfitf- 1s ropping of the slabs or other piece is advantageous in .jarring the scale from the ieces, but is hard on the table, the pieces ein heavy and falling from a'considerable heig t directly-upon the table rolls.

The object of my invention is to provide means for relieving thetable of these blows. The nature of my invention will be best understood by reference to the accompanying drawings, which will now be described, it being premised, however, that the particular forms of my invention therein shown are illustrative only and that my invention is susceptible of various other embodiments within the scope of the appended claims.

Referring first to the form of my invention shown in Figs. 1 and 2, the numeral 2 designates the housings of a two-high mill, of which 3 is the lower roll, and 4 the upper roll. 5 and 6 designate the usual roller tables at opposite sides of the rolls. In the form shown in these two figures, both tables are capable of vertical movement, being so connected that as the table 6 rises to deliver the slab or other piece back over the topof the roll 4, the table 5 will fall. These tables may be supported and actuated in any well known or desired manner. shown, and which is illustrative only, the table 6 is supported in art by the lever arms 7 of the transverse rocit shafts 8, said shafts being connected by means of lever arms 9 and i connected by a pitman 11 with a crank shaft In the formnks 10. One of the lever arms 9 is.

12 which is geared to an actuating motor 13. The table 5 is similarly supported upon lever arms 14 of transverse rock shafts 15, having depending lever arms 16 connected by a link 17. One of the levers 16 is connected by a link 18 with a lever arm 19 of one of the rock shafts 8. By means of this system of link and lever connections, actuated by the motor 13,. when the table 6 is elevated, the table 5 falls to a corresponding extent, and vice versa.

'20 designates the usual counterbalance cylinders for the tables.

21 is a plate which is rigidly secured to the frame and housings of the mill, being supported upon one of the shoe plates 22 of the mill and having a plurality of up wardly extending projections or bumpers 23, which are arranged to extend between the rolls of the table 5.

When the table 6 rises to carry the slab or other piece up to be delivered back over the top of the roll 4, the table 5 is lowered sufficiently to cause the upper ends of the projections 23 to be above the rollsurface of the table 5 and in position to receive the slab or other piece as it falls to the roll 4. The falling piece strikes these bumper projections, which receive the full impact of the blow and thus relieve the table. -As the table 6 falls, the table 5 rises lifting the piece off from the bumper projections.

In the modification shown in Fig. 3, the table 6 is movable vertically in the same manner as the table 6, just described, but the table 5 is stationary; and instead of moving said table vertically relatively to the bumper projections 23, the latter are carried by a movable support 23, which is arranged to be moved upwardly when the table 6 rises and to be moved downwardly when the table 6 falls. This may be accomplished in a variety of ways. I have shown the carrier 23" as mounted upon toggle links 24 connected to a longitudinally movable rod 25. This rod is connected to an upwardly extending lever arm 26 of a tran verse rock shaft 27 having a depending lever arm 28 which is connected by a link 29 with a lever arm 19 which corresponds to the lever arm 19 shown at Fig. 1. The operation of this form of my invention is substantially the same as that of the form ,first described. When the table 6 rises to deliver a piece over the'top of the upper roll, the carrier 23 is moved upwardly to bring the bumper projections 23 above the roller surface of the table in positiontorecelve the piece. When the table 6 is again lowered, the carrier 23 is moved down to withdraw the projections 23 below the surface of the table rollers, leavin the piecesupported bythe rollers.

y invention provides means of very simple and effective character for relieving the roll table; while at the same time it pro- 7 j vides a receiv'ing device for the slabs or other pieces whichenables the fall of the slab to be utilized to jar the scale therefrom.

WhatIclair'nis; V t i 1; In a rolling mill, thecombination of a movable table .of,a plurality of bumpers arranged to project upwardly through the table adjacent to the'rolls, and means for I 1 eifecting a relative vertical movement of'the bumpers and table; substantially. as described." I

2. In a two-high rollin mill,a vertically movable table on one si e of the rolls, arranged to raise-[the iece bein rolled and deliver it back overt e top rol of the mill,

a table at the opposite side of the rolls, and

- a plurality of bumpers arranged to; project upwardly throught'he tableadjacent to the rolls, together with *means for effecting a.

relative vertical-movement of the bumpers so and .the last named table; substantiallyas described.

3. In a two-high mill,.'a vertically movable table, a receiving or bumping device.

having portions arranged to extend uP- wardly through the table, a vertically mov able table at the op osite side of the rolls,

- and means actuate by the -movement of 1 the last named table for, effecting a relative vertical movement of the receiving or bum 40 ing evice and the first named; table; su stantiallyas described.

4. Ina two-high mill, vertically movable; I

.tablesarra'n ed at "opposite sides of ,therollf a bumpin evice'havingportions arrange to exten upwardly throu h one of the" tables, and connections w ereby vertical "movement of one-table .causes an opposite GEO. H. Panamanian I have hereunto 

